摘要
针对风电场入流条件受复杂地形影响非均匀分布的问题,提出了一种由风力机功率反推非均匀入流条件的方法。以均匀入流条件下复杂地形风场计算为基础,使用致动盘模型模拟风电场尾流效应,获得轮毂入流风速与致动盘平均风速的映射关系,再以致动盘平均风速为中间量,推导功率与轮毂入流风速的对应关系,最终反推非均匀入流条件。通过与CFD计算出的非均匀入流条件对比,误差在20%以内,验证了非均匀入流条件反推法的可行性,可为复杂地形风电场微观选址优化和功率预测提供理论依据。
Affected by topography,the inflow conditions of wind farms in complex terrain distributes non-uniformly at the same height.This paper presented a method to estimate the non-uniform inflow conditions from the output power of wind turbines.By using the actuator disk method to model wakes,wind field simulation of wind farms in complex terrain under different uniform conditions were carried out to establish the relationship between the inflow velocity at hub and the mean velocity in the disk.With the mean velocity in the disk as the intermediate variable,the output power was used to estimate the inflow velocity at hub and the non-uniform inflow conditions.The proposed method was tested by using CFD simulation and the error is less than 20%,which validated the feasibility of the proposed method.Therefore,it can provide a theoretical basis for wind farm layout and power forecasting in complex terrain.
出处
《水电能源科学》
北大核心
2015年第3期202-204,195,共4页
Water Resources and Power
基金
中丹国际科技合作专项项目(2014DFG62530)
南通市科技计划项目(BK2014028)
教育部留学回国人员科研启动基金项目(2012-940)
关键词
复杂地形风电场
致动盘模型
湍流修正
非均匀入流条件
wind farm in complex terrain
actuator disc model
turbulence modification
non-uniform inflow conditions
作者简介
韩星星（1990-），男，硕士研究生，研究方向为风电场空气动力学，E-mail：15195952259@163．com
